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* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
.intel_syntax noprefix
.globl _objc_msg_lookup
.globl _objc_msg_lookup_stret
.globl _objc_msg_lookup_super
.globl _objc_msg_lookup_super_stret
.section __TEXT, __text, regular, pure_instructions
.macro generate_lookup
$0:
testq %rdi, %rdi
test rdi, rdi
jz ret_nil
movq (%rdi), %r8
movq 64(%r8), %r8
mov r8, [rdi]
mov r8, [r8+64]
Lmain_$0:
movq (%rsi), %rax
movzbl %ah, %ecx
movzbl %al, %edx
mov rax, [rsi]
movzx ecx, ah
movzx edx, al
#ifdef OF_SELUID24
shrl $$16, %eax
shr eax, 16
movq (%r8,%rax,8), %r8
mov r8, [r8+rax*8]
#endif
movq (%r8,%rcx,8), %r8
movq (%r8,%rdx,8), %rax
mov r8, [r8+rcx*8]
mov rax, [r8+rdx*8]
testq %rax, %rax
test rax, rax
jz $1
ret
.endmacro
.macro generate_lookup_super
$0:
movq %rdi, %r8
movq (%rdi), %rdi
testq %rdi, %rdi
mov r8, rdi
mov rdi, [rdi]
test rdi, rdi
jz ret_nil
movq 8(%r8), %r8
movq 64(%r8), %r8
mov r8, [r8+8]
mov r8, [r8+64]
jmp Lmain_$1
.endmacro
generate_lookup _objc_msg_lookup, _objc_method_not_found
generate_lookup _objc_msg_lookup_stret, _objc_method_not_found_stret
generate_lookup_super _objc_msg_lookup_super, _objc_msg_lookup
generate_lookup_super _objc_msg_lookup_super_stret, _objc_msg_lookup_stret
ret_nil:
leaq nil_method(%rip), %rax
lea rax, [rip+nil_method]
ret
nil_method:
movq %rdi, %rax
mov rax, rdi
ret
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